Printng mechanism for computing-machines.



J. Ee W. GREVE. PRINTING MECHANISM FOR GOMPUTENG MACHINES, APPLwATmi-I 1 11.213 MAY 28, 1914.

4 SHEETfi-SHEET l.

HHHHHH HHH Patented Dec. 22, 1914.

PRINTING MEOEANISM FOR COMPUTING MACHINES,

APPLICATION FILED MAY 28. 1914.

Patented Dec. 22,1914

4 BHEETSSHEET 2 [Emil ilm 4 J E. W. GREVE.

PRINTING mcmmsm FOB COMPUTING MACHINES.

APPLICATION FLJED MAY 28, 1914.

EL IQLSQGQ I Patented De0.22,1914.

4 SHEETS-SHEET 3.

PRINTING- MEGEANISM FOE COMPUTING MACHINES,

APPLIOATIOS PILEDEJAY 28. 1914.

Patented 360.22, 1914.

lwvawv'on 5 W are/0 @Fib 3m be 1H.

the

, mown T e 1 L h w 1 m m... ml a a 4 ntii manna mom 0 mounted a freely rotatable lever said lever-{158, being adapted to cooperate with the .hctuatingyokc 1159 for the release-bars .1132,,1"This'actuating yoke 159 operates in a guideslot 160 (Fig. 2) i'or'niecl' in a pro ectlng'lportion 161 of the frame 141 and is reciprocatingjlever 167 fixed on" the shaft 165. The arins 168 of the leversvglfi'i are 5 1 connected bymeansfof links 169 with the J bell-crank layers 110,171,- which are secured upon thej'shaft f128flA transverse bar 128", 7 extending 'ove'r .,the printing hammers 126 ter v s 1. 1

anism is asfollowsz i t the beginnin'gfof the uforw-ardmovement of the hand crank, the

he ms: 171 of the bell-crank le- I ,--'so. that, the duplicate setsfof levers operatev together. 7 Y

5 f'Tlie operation of the above described mechdraw-bar' 156 is moved; in the. direction. of

, the arrow Figgl-jhy means c i a transfer mechanism, ofwell-known construct on, and

" swin s. the-letter 151* upon the j shaft 157, and at'the sametime 'actuates lere'rs'151 151;"; which are ,galsfo' secured in the shaft. 15?, in a counter clockwise direction. lithe pins'150 carried by the levers 151 and 151? swing into engagement with the toggle connections 145,146 and depress theminto extended position, When 'saiditoggles are i the action of the springs 163. During thethus extended, the pin l50should-have. been, brought into a position of engagementjvithth'e lever 158 and pushed the latter-downward to the position shown in Fig-.,2. By.

the depression of the to; gle connections 1 15,

146 the carrier-yoke 142101 the spring aotuated pins 149 is turned to the right (Figs. 1 and on its pivot-pins 143 and comes .Ento a position against the release-bars 132i By meansof the downward movement of 45 the level-'15s the yoke 159 is oarr-ied'vertically downward in its guidesltlo' against time of idle movement of the-pins 150, the type-bars 126 are raised in a wellknown manner, and by meahs of the reaction of the cam sides of the recesses 131 on the pro- "jecti'on 132. the release-bars 132 are swung outwardly ontheir pivot-pins on the twoarmed levers 129, so that the projections 132 engage below'the draw-yolre 159, and can he carried along by the latter. the release-bars 132 are thusactuated, then they release by means of the lever 129 in a manner also-well-known the printing hammers 128. lt'is evidentQthat since during he meanwhile upward movement of: the type-bars, the; pins "150 execute an idle movement and'then only at the end of this movement depress the toggle 145, 146, the release bars 132 and the type-bars are not i to the"draw-yoke ";-l59,' then the resistance normal positions, the. spring-pressed bolts When actuated bolts 149 are pressed into position against the release-bars 132, through the .mediurn of the carrier-yoke 142, after the depressionof the toggle 145, 146, they exer cise two separate operations. Namely, if 1 in any case the releasebars should happen .to be setfinto outer position through ary v jundesired action, as by frictiomimproper- ,jpositioningof 'the' machine, orjthl'ough 'vi-j bratiomso thattheyare liable to be locked ,o'f the spring-pressed bolts149- returns those "'release%bars '132 which are in obviously .wrong-tposition back to proper position, so that in this my the release-bars are regu lated' by the s ringactua'ted bolts. The re lease bars w ch are properly outwardly swung onset, and which release the corre-v "spending" printing hammers. in order to print the number set up on. the key-board, stand, as shown in Fig. 2', during the operation of the yoke 159 under the pressurevof tl1ei,spring-pressed bolts M9, so that after the printing of the number, when all of the ';other elements have been returned to-their exercise their second funotion,,in that, they permit that the release-bars also return to their normal positions when the type-bars 126 descend and the projections on the release-bars return to the recesses 131. I

/Vhen the parts of the computing-machino carry out the return movements to the position of rest, then the draw-bar 156 moves to the left and turns thereby the lever 151, 151, 151 and 164 in the clockwise direction. The nose or lug 155 on bar 156 on one side of the machine strikes against the projection or arm 154i and the pin 151 on lever 151 on the other side of the machine strikes against arm 15 1 of the corresponding toggleconnection, whereby the toggle-lever is returned to its accustomed position according to Fig. 1. At the 2:? turn of pin 150 the lever 158 and the yoke 159 are set free, so that the-springs 163 operate to return the latter element to normal position. When the lever 16% swings back the forked-lever 167 -is swung upwardly to the right and turns, through the medium of the shaft 166, the lever-arm .168 downwardly to] the left, wherebythe latter, by means of the pivotedlink 169 on the bell-crank lever 170, 171, turns with its shaft 128 in a'clock-wise direction and the crossbar 128 presses back the released printing hammers until fltey advantageously noticeable in the, present apparatus particularly in the operation" of j J vm itiple-ba'nk machines; ,When-the-s'pringso i lianimcrs snap under the lugs 129* of the lock-levers 129. In this manner all of the elements are returned to their normal position.

What I claim is z- 7 1. Printing mechanism for computing machines. comprising in combination, a pluralit of type-bars, spring-actuated printing for said type-lit "s, means for nor mally locking said hammers against springpressure, a series of release-liars for releasing said hammers, means to actuate said release liars, and a resistant means to be drawn into contact with said release-bars to regulate the setting oi? the latter.

2. Printing mechanism l'or computing machines, comprising in combination, a plurality ot' typediars, spring-actuated printing hammers for said trpelaars, means for normally locking said hammers against sgringpressure, a series of release-liars for releasing said hanmiers. means to actuate said release bars, and a res taut means to he brought into contact with said release-bars after said type-liars are set to in'event accidental actuation of unset releasehars and to return set releaselnn's after a printing operation.

3. Printing mechanism for computing machines, comprising in combination, a plurality of type-liars. spring-actuated printing hammers for said type-liars, means for normall locking said hammers against springpressure, a series of release-bars for releasing said hammers, means to actuate said release bars, a resilient means adapted to be remorably carried into engagement with said releasehars to control the movement of the latter after their setting, said bolts for simultaneous moi'einent, and means to actuate said yoke.

l. Printing mechanism for computing machines, conngrising in combination, plural ity of type-bars, spring-actuated printing hammers for said type-liars, means for normally locking said hammers against springpressure, a series of release-bars for releas ing said hammer, means to actuate said release-hars. a resilient means adapted to be remorahly carried into engagement with said release-liars to control the movement of the latter after their setting, a yoke carrying said bolts for simultaneous movement, a toggle connection between said yoke and said release-liar actuating means and means for extending said toggle-connection to actuate said yoke simultaneously with the actuation of said release-l ar actuatin means.

111 testin'iony \rhereo't' it atiu: my signature in presence of two witnesses.

JUHY Kalil) WILLLXM GREVE.

'llitnesses: I

F. (2. Hanna, G. (lumen.

a yoke carrying 

